Compare 70/45 and 81/90
1st number: 1 25/45, 2nd number: 81/90
70/45 is greater than 81/90
Steps for comparing fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 45 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 45 × 2 = 90,
70/45 = 70 × 2/45 × 2 = 140/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
81/90 = 81 × 1/90 × 1 = 81/90 - Since the denominators are now the same, the fraction with the bigger numerator is the greater fraction
- 140/90 > 81/90 or 70/45 > 81/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 70/90 and 81/90